ScrollbarThemeQStyle.cpp [plain text]
#include "config.h"
#include "ScrollbarThemeQStyle.h"
#include "GraphicsContext.h"
#include "PlatformMouseEvent.h"
#include "RenderThemeQStyle.h"
#include "ScrollView.h"
#include "Scrollbar.h"
namespace WebCore {
ScrollbarThemeQStyle::ScrollbarThemeQStyle()
{
m_qStyle = adoptPtr(RenderThemeQStyle::styleFactory()( 0));
}
ScrollbarThemeQStyle::~ScrollbarThemeQStyle()
{
}
static QStyleFacade::SubControl scPart(const ScrollbarPart& part)
{
switch (part) {
case NoPart:
return QStyleFacade::SC_None;
case BackButtonStartPart:
case BackButtonEndPart:
return QStyleFacade::SC_ScrollBarSubLine;
case BackTrackPart:
return QStyleFacade::SC_ScrollBarSubPage;
case ThumbPart:
return QStyleFacade::SC_ScrollBarSlider;
case ForwardTrackPart:
return QStyleFacade::SC_ScrollBarAddPage;
case ForwardButtonStartPart:
case ForwardButtonEndPart:
return QStyleFacade::SC_ScrollBarAddLine;
}
return QStyleFacade::SC_None;
}
static ScrollbarPart scrollbarPart(const QStyleFacade::SubControl& sc)
{
switch (sc) {
case QStyleFacade::SC_None:
return NoPart;
case QStyleFacade::SC_ScrollBarSubLine:
return BackButtonStartPart;
case QStyleFacade::SC_ScrollBarSubPage:
return BackTrackPart;
case QStyleFacade::SC_ScrollBarSlider:
return ThumbPart;
case QStyleFacade::SC_ScrollBarAddPage:
return ForwardTrackPart;
case QStyleFacade::SC_ScrollBarAddLine:
return ForwardButtonStartPart;
}
return NoPart;
}
static QStyleFacadeOption initSliderStyleOption(ScrollbarThemeClient* scrollbar, QObject* widget = 0)
{
QStyleFacadeOption opt;
if (widget) {
opt.palette = widget->property("palette").value<QPalette>();
opt.rect = widget->property("rect").value<QRect>();
opt.direction = static_cast<Qt::LayoutDirection>(widget->property("layoutDirection").toInt());
} else
opt.state |= QStyleFacade::State_Active;
opt.state &= ~QStyleFacade::State_HasFocus;
opt.rect = scrollbar->frameRect();
if (scrollbar->enabled())
opt.state |= QStyleFacade::State_Enabled;
if (scrollbar->controlSize() != RegularScrollbar)
opt.state |= QStyleFacade::State_Mini;
opt.slider.orientation = (scrollbar->orientation() == VerticalScrollbar) ? Qt::Vertical : Qt::Horizontal;
if (scrollbar->orientation() == HorizontalScrollbar)
opt.state |= QStyleFacade::State_Horizontal;
else
opt.state &= ~QStyleFacade::State_Horizontal;
opt.slider.value = scrollbar->value();
opt.slider.position = opt.slider.value;
opt.slider.pageStep = scrollbar->pageStep();
opt.slider.singleStep = scrollbar->lineStep();
opt.slider.minimum = 0;
opt.slider.maximum = qMax(0, scrollbar->maximum());
ScrollbarPart pressedPart = scrollbar->pressedPart();
ScrollbarPart hoveredPart = scrollbar->hoveredPart();
if (pressedPart != NoPart) {
opt.slider.activeSubControls = scPart(scrollbar->pressedPart());
if (pressedPart == BackButtonStartPart || pressedPart == ForwardButtonStartPart
|| pressedPart == BackButtonEndPart || pressedPart == ForwardButtonEndPart
|| pressedPart == ThumbPart)
opt.state |= QStyleFacade::State_Sunken;
} else
opt.slider.activeSubControls = scPart(hoveredPart);
if (hoveredPart != NoPart)
opt.state |= QStyleFacade::State_MouseOver;
return opt;
}
bool ScrollbarThemeQStyle::paint(ScrollbarThemeClient* scrollbar, GraphicsContext* graphicsContext, const IntRect& dirtyRect)
{
if (graphicsContext->updatingControlTints()) {
scrollbar->invalidateRect(dirtyRect);
return false;
}
StylePainterQStyle p(this, graphicsContext);
if (!p.isValid())
return true;
p.painter->save();
p.styleOption = initSliderStyleOption(scrollbar, m_qStyle->widgetForPainter(p.painter));
p.painter->setClipRect(p.styleOption.rect.intersected(dirtyRect), Qt::IntersectClip);
p.paintScrollBar();
p.painter->restore();
return true;
}
ScrollbarPart ScrollbarThemeQStyle::hitTest(ScrollbarThemeClient* scrollbar, const IntPoint& position)
{
QStyleFacadeOption opt = initSliderStyleOption(scrollbar);
const QPoint pos = scrollbar->convertFromContainingWindow(position);
opt.rect.moveTo(QPoint(0, 0));
QStyleFacade::SubControl sc = m_qStyle->hitTestScrollBar(opt, pos);
return scrollbarPart(sc);
}
bool ScrollbarThemeQStyle::shouldCenterOnThumb(ScrollbarThemeClient*, const PlatformMouseEvent& evt)
{
return m_qStyle->scrollBarMiddleClickAbsolutePositionStyleHint() && evt.button() == MiddleButton;
}
void ScrollbarThemeQStyle::invalidatePart(ScrollbarThemeClient* scrollbar, ScrollbarPart)
{
scrollbar->invalidate();
}
int ScrollbarThemeQStyle::scrollbarThickness(ScrollbarControlSize controlSize)
{
const bool mini = controlSize != RegularScrollbar;
return m_qStyle->scrollBarExtent(mini);
}
int ScrollbarThemeQStyle::thumbPosition(ScrollbarThemeClient* scrollbar)
{
if (scrollbar->enabled()) {
float pos = (float)scrollbar->currentPos() * (trackLength(scrollbar) - thumbLength(scrollbar)) / scrollbar->maximum();
return (pos < 1 && pos > 0) ? 1 : pos;
}
return 0;
}
int ScrollbarThemeQStyle::thumbLength(ScrollbarThemeClient* scrollbar)
{
QStyleFacadeOption opt = initSliderStyleOption(scrollbar);
QRect thumb = m_qStyle->scrollBarSubControlRect(opt, QStyleFacade::SC_ScrollBarSlider);
return scrollbar->orientation() == HorizontalScrollbar ? thumb.width() : thumb.height();
}
int ScrollbarThemeQStyle::trackPosition(ScrollbarThemeClient* scrollbar)
{
QStyleFacadeOption opt = initSliderStyleOption(scrollbar);
QRect track = m_qStyle->scrollBarSubControlRect(opt, QStyleFacade::SC_ScrollBarGroove);
return scrollbar->orientation() == HorizontalScrollbar ? track.x() - scrollbar->x() : track.y() - scrollbar->y();
}
int ScrollbarThemeQStyle::trackLength(ScrollbarThemeClient* scrollbar)
{
QStyleFacadeOption opt = initSliderStyleOption(scrollbar);
QRect track = m_qStyle->scrollBarSubControlRect(opt, QStyleFacade::SC_ScrollBarGroove);
return scrollbar->orientation() == HorizontalScrollbar ? track.width() : track.height();
}
void ScrollbarThemeQStyle::paintScrollCorner(ScrollView*, GraphicsContext* context, const IntRect& rect)
{
StylePainterQStyle p(this, context);
if (!p.isValid())
return;
p.paintScrollCorner(rect);
}
}